AIIMS2019Physics-Thermodynamics
AIIMS 2019 Physics Efficiency MCQ Question
Type: MCQ-numerical-Medium-Class 11
The temperature of food material in refrigerator is 4°C and temperature of environment is 15°C. If carnot cycle is used in its working gas, then find its carnot efficiency.
A
0.038
B
0.028
C
0.053
D
0.072
Correct Answer
Option B
Detailed Explanation
The calculation of efficiency (η) using the formula η = 1 - T₂/T₁ yields a value of 0.038 when substituting T₂ = 277 K (273 + 4) and T₁ = 288 K (273 + 15). This low efficiency indicates that the system is not performing well, as it is significantly less than 1. Other options are not applicable as they do not provide relevant values or interpretations related to the efficiency calculation, which is crucial for understanding thermodynamic processes.
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